1 John 3:5-9 "5 And you know that He was manifested to take away our sins, and in Him there is no sin. 6 Whoever abides in Him does not sin. Whoever sins has neither seen Him nor known Him. 7 Little children, let no one deceive you. He who practices righteousness is righteous, just as He is righteous. 8 He who sins is of the devil, for the devil has sinned from the beginning. For this purpose the Son of God was manifested, that He might destroy the works of the devil. 9 Whoever has been born of God does not sin, for His seed remains in him; and he cannot sin, because he has been born of God.
Romans 7:5-6 are the only verses in Romans 7 that are about Christians. 5 For when we were in the flesh, the sinful passions which were aroused by the law were at work in our members to bear fruit to death. 6 But now we have been delivered from the law, having died to what we were held by, so that we should serve in the newness of the Spirit and not in the oldness of the letter.
Unfortunately, there are many people in the church that still struggle with sin because they've never been born again of the Spirit. Even though it was 30 years before I was finally born again of the Spirit, at least, I know the difference the Spirit makes, and can teach the truth that sets man free. John 8:32, 34-36